Patch tracker / KB5054229

KB5054229: ASP.NET Core 8.0 Security Update (March 2025)

KB5054229 is a High security update for ASP.NET Core 8.0, released 2025-03-11. It closes 1 CVE with a maximum CVSS of 7.0. It is the 29th largest of the 33 updates Microsoft shipped that month, by CVEs closed.

Update summary

High

2025-03-11

Released

CVEs fixed

7.0

Max CVSS v3

High

Severity

Deploy this cycle

Fixes 1 CVE for ASP.NET Core 8.0. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.0 (High). EPSS exploit probability up to <1%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for ASP.NET Core 8.0 has shipped since this one: KB5081277 (2026-03-10). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.

Microsoft Update Catalog: download KB5054229 Microsoft support article

Senserva AI Opinion for KB5054229

KB5054229 fixes CVE-2025-24070 across ASP.NET Core 8.0 and 9.0 and Visual Studio 2022 17.12, High severity at CVSS 7.0, the lowest score of any High-rated item in this batch. Because it spans a web framework as well as the IDE, both deployed ASP.NET Core applications and developer machines running Visual Studio 17.12 are affected. No CISA KEV or ransomware activity is associated with this CVE currently.

Do this: Update ASP.NET Core 8.0/9.0 and Visual Studio 2022 17.12 with KB5054229.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5054229

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin triaging Microsoft updates. Facts for KB5054229 (source: https://senserva.com/kb/5054229.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- Update: KB5054229, ASP.NET Core 8.0, released 2025-03-11
- Severity: High; fixes 1 CVE, max CVSS 7.0
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2025-24070
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5054229
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for KB5054229

Released: 2025-03-11
Last changed: 2025-03-11
Changes tracked: 1

Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.

Check if KB5054229 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5054229 installed? (elevated PowerShell)
Get-HotFix -Id KB5054229 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5054229 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

CVEs fixed by this update

Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.

CVE	Severity	CVSS	EPSS	Exploited
CVE-2025-24070	High	7.0	<1%	No

Scope and sources

Affected products

Also released in March 2025

Authoritative references

Official KB5054229 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

KB5054229: ASP.NET Core 8.0 Security Update (March 2025)

Update summary

Full tracking and change history for KB5054229

Check if KB5054229 is installed

CVEs fixed by this update

Scope and sources

KB5051974

KB5051979

KB5051980

KB5051987

KB5051989

KB5052000

KB5052006

KB5052040